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Directional coronary atherectomy for coronary artery spasm refractory to medical therapy
T C Hilton1, J L Blackshear, B Utset
1Department of Cardiology, St. Luke's Hospital, Jacksonville, Florida, USA.
Insights
Coronary atherectomy successfully treated severe coronary artery spasm in a patient refractory to medical therapy. This intervention provided rapid symptom relief, resolving daily angina and ST-segment elevation.
Area of Science:
- Cardiology
- Interventional Cardiology
- Vascular Medicine
Background:
- Coronary artery spasm can cause severe, refractory angina unresponsive to standard antianginal medications.
- Intravenous nitroglycerin dependence highlights the severity and medical intractability of the patient's condition.
- Left anterior descending artery stenosis, even mild, can exacerbate ischemic symptoms in the presence of spasm.
Observation:
- A patient presented with daily episodes of angina accompanied by ST-segment elevation.
- The patient was refractory to multiple antianginal therapies and required continuous intravenous nitroglycerin.
- A mild (40%) stenosis in the left anterior descending artery was identified.
Findings:
- Coronary atherectomy was performed on the left anterior descending artery stenosis.
- The procedure resulted in a prompt and dramatic clinical improvement.
- The patient's dependence on intravenous nitroglycerin and daily angina episodes resolved post-intervention.
Implications:
- Coronary atherectomy may be a viable treatment option for select patients with medically refractory coronary artery spasm.
- Addressing underlying stenosis, even mild, might be crucial in managing complex coronary artery spasm.
- This case suggests a potential therapeutic role for atherectomy beyond significant obstructive coronary artery disease.
Abstract:
A patient with severe medically refractory coronary artery spasm was treated successfully with coronary atherectomy of a mild (40%) left anterior descending artery stenosis. Before the procedure, the patient was dependent on intravenous nitroglycerin because of daily episodes of angina with ST-segment elevation despite receiving multiple combinations of antianginal therapies. Clinical response to coronary atherectomy was prompt and dramatic.